IFC (IFC4X3) development IfcPointOnCurve Semantic definition

The IfcPointOnCurve is a point defined by a parameter value of its defining curve.

Informal Propositions:

  1. The value of the point parameter shall not be outside the parametric range of the curve. Entity inheritance Attributes

# Attribute Type Description
IfcRepresentationItem (2)
LayerAssignment SET [0:1] OF IfcPresentationLayerAssignment FOR AssignedItems

Assignment of the representation item to a single or multiple layer(s). The LayerAssignments can override a LayerAssignments of the IfcRepresentation it is used within the list of Items.

StyledByItem SET [0:1] OF IfcStyledItem FOR Item

Reference to the IfcStyledItem that provides presentation information to the representation, e.g. a curve style, including colour and thickness to a geometric curve.

Click to show 2 hidden inherited attributes Click to hide 2 inherited attributes
IfcPointOnCurve (3)
1 BasisCurve IfcCurve

The curve to which point parameter relates.

2 PointParameter IfcParameterValue

The parameter value of the point location.

* Dim IfcDimensionCount

This attribute is formally derived.


The space dimensionality of this class, determined by the space dimensionality of the basis curve.

Table Formal representation

ENTITY IfcPointOnCurve
 SUBTYPE OF (IfcPoint);
	BasisCurve : IfcCurve;
	PointParameter : IfcParameterValue;
	 Dim : IfcDimensionCount := BasisCurve.Dim;
END_ENTITY; References

Edit on Github

Is this page difficult to understand? Let us know!